Use co_qualname in reporting when possible

CHANGELOG.rst

@@ -12,6 +12,7 @@ Changes
 * FIX: Fixed namespace bug when running ``kernprof -m`` on certain modules (e.g. ``calendar`` on Python 3.12+).
 * FIX: Fixed ``@contextlib.contextmanager`` bug where the cleanup code (e.g. restoration of ``sys`` attributes) is not run if exceptions occurred inside the context
 * ENH: Added CLI arguments ``-c`` to ``kernprof`` for (auto-)profiling module/package/inline-script execution instead of that of script files; passing ``'-'`` as the script-file name now also reads from and profiles ``stdin``
+* ENH: In Python >=3.11, profiled objects are reported using their qualified name.
 * ENH: Highlight final summary using rich if enabled
 
 4.2.0

line_profiler/_line_profiler.pyx

@@ -24,6 +24,7 @@ from libc.stdint cimport int64_t
 from libcpp.unordered_map cimport unordered_map
 import threading
 import opcode
+import types
 
 NOP_VALUE: int = opcode.opmap['NOP']
 
@@ -32,6 +33,9 @@ NOP_VALUE: int = opcode.opmap['NOP']
 # if sys.version_info[0:2] >= (3, 11):
 NOP_BYTES: bytes = NOP_VALUE.to_bytes(2, byteorder=byteorder)
 
+# This should be true for Python >=3.11a1
+HAS_CO_QUALNAME: bool = hasattr(types.CodeType, 'co_qualname')
+
 # long long int is at least 64 bytes assuming c99
 ctypedef unsigned long long int uint64
 ctypedef long long int int64
@@ -155,14 +159,21 @@ else:
 
 def label(code):
     """
-    Return a (filename, first_lineno, func_name) tuple for a given code object.
+    Return a (filename, first_lineno, _name) tuple for a given code object.
+
+    This is the similar labelling as used by the cProfile module in Python 2.5.
 
-    This is the same labelling as used by the cProfile module in Python 2.5.
+    Note:
+        In Python >=3.11 we use we return qualname for _name.
+        In older versions of Python we just return name.
     """
     if isinstance(code, str):
         return ('~', 0, code)    # built-in functions ('~' sorts at the end)
     else:
-        return (code.co_filename, code.co_firstlineno, code.co_name)
+        if HAS_CO_QUALNAME:
+            return (code.co_filename, code.co_firstlineno, code.co_qualname)
+        else:
+            return (code.co_filename, code.co_firstlineno, code.co_name)
 
 
 cpdef _code_replace(func, co_code):

tests/test_line_profiler.py

@@ -257,7 +257,7 @@ def foo(cls) -> str:
         output = strip(sio.getvalue())
     print(output)
     # Check that we have profiled `Object.foo()`
-    assert output.endswith('- foo')
+    assert output.endswith('foo')
     line, = (line for line in output.splitlines() if line.endswith('* 2'))
     # Check that it has been run twice
     assert int(line.split()[1]) == 2
@@ -291,7 +291,7 @@ def foo(x: int) -> int:
         output = strip(sio.getvalue())
     print(output)
     # Check that we have profiled `Object.foo()`
-    assert output.endswith('- foo')
+    assert output.endswith('foo')
     line, = (line for line in output.splitlines() if line.endswith('* 2'))
     # Check that it has been run twice
     assert int(line.split()[1]) == 2
@@ -332,7 +332,7 @@ def foo(self, x: int) -> int:
         output = strip(sio.getvalue())
     print(output)
     # Check that we have profiled `Object.foo()`
-    assert output.endswith('- foo')
+    assert output.endswith('foo')
     line, = (line for line in output.splitlines() if line.endswith('* x'))
     # Check that the wrapped methods has been run twice in total
     assert int(line.split()[1]) == 2
@@ -368,7 +368,7 @@ def foo(self, x: int) -> int:
         output = strip(sio.getvalue())
     print(output)
     # Check that we have profiled `Object.foo()` (via `.bar()`)
-    assert output.endswith('- foo')
+    assert output.endswith('foo')
     line, = (line for line in output.splitlines() if line.endswith('* x'))
     # Check that the wrapped method has been run once
     assert int(line.split()[1]) == 1
@@ -408,7 +408,7 @@ def foo(x: int, y: int) -> int:
         output = strip(sio.getvalue())
     print(output)
     # Check that we have profiled `foo()`
-    assert output.endswith('- foo')
+    assert output.endswith('foo')
     line, = (line for line in output.splitlines() if line.endswith('x + y'))
     # Check that the wrapped partials has been run twice in total
     assert int(line.split()[1]) == 2
@@ -457,7 +457,7 @@ def foo(self, foo) -> None:
         output = strip(sio.getvalue())
     print(output)
     # Check that we have profiled `Object.foo`
-    assert output.endswith('- foo')
+    assert output.endswith('foo')
     getter_line, = (line for line in output.splitlines()
                     if line.endswith('* 2'))
     setter_line, = (line for line in output.splitlines()
@@ -498,9 +498,8 @@ def foo(self) -> int:
     with io.StringIO() as sio:
         profile.print_stats(stream=sio, summarize=True)
         output = strip(sio.getvalue())
-    print(output)
     # Check that we have profiled `Object.foo`
-    assert output.endswith('- foo')
+    assert output.endswith('foo')
     line, = (line for line in output.splitlines() if line.endswith('* 2'))
     # Check that the getter has been run once
     assert int(line.split()[1]) == 1